提高链式STATCOM非对称故障运行能力的控制方法  

Cascaded STATCOM control to enhance its operating performance in asymmetrical fault condition

作　　者：林建熙 袁志昌[2] 杨银国[1] 易杨[1] 

机构地区：[1]广东电网公司电力调度控制中心,广东广州510600 [2]清华大学电机工程与应用电子技术系.北京100084

出　　处：《电力自动化设备》2015年第12期108-115,共8页Electric Power Automation Equipment

摘　　要：提出一种适用于非对称故障的链式静止同步补偿器(STATCOM)控制方法。基于链式STATCOM等效单相数学模型,分析其在电网不对称故障时的运行特性;根据三相直流电容能量平衡的要求,推导出链式STATCOM在非对称故障下的控制方法 ,进一步设计一种分相直接电流跟踪的控制器,讨论控制参数的选取方法及其性能。PSCAD平台的数字仿真结果验证了所提方法的有效性。A control method suitable for the cascaded STATCOM in the condition of asymmetrical power system fault is proposed. Its operating performance in asymmetrical fault condition is analyzed based on its equivalent single-phase mathematical model. The control method for the cascaded STATCOM in asymmetrical fault condition is deduced according to the requirement of three-phase DC capacitor for energy balance and a controller with split-phase direct-current tracking is designed. The selection of control parameters and corresponding functions are discussed. The simulative results on PSCAD verify the effectiveness of the proposed method.

关 键 词：逆变器 静止同步补偿器 非对称故障 控制 

分 类 号：TM762[电气工程—电力系统及自动化]